ADDTOZONE inserts in-line javascript to the appropriate place in the rendered page

URLPARAM is used to relay the autocomplete request from the web browser into a part of a SEARCH query

SEARCH On this topic, displays all topics with FAQForm attached that have TopicClassification set to FrequentlyAskedQuestion. In the FAQForm topic, SEARCH generates the suggested list of topics for a given autocomplete request

MAKETEXT will try to use a translation appropriate for the logged-in user's language preference for the string given to it